X3D Model Documentation: Query.x3d

  1  <?xml version="1.0" encoding="UTF-8"?>
  2  <!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
  3  <X3D profile='Immersive' version='3.3'  xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.3.xsd'>
  4       <head>
  5            <meta name='title' content='Query.x3d'/>
  6            <meta name='description' content='Query browser state: this world uses the "Browser" object in a script to query information about the VRML browser. That information is sent out as an MFString event that is routed into a Text node string input. The effect is to display a text message showing the Browser information. To give the browser something to do to make it report interesting frame rates, an animating object is displayed beside the text information.'/>
  7            <meta name='creator' content='David R. Nadeau'/>
  8            <meta name='translator' content='Don Brutzman'/>
  9            <meta name='created' content='1 July 1998'/>
 10            <meta name='translated' content='2 February 2014'/>
 11            <meta name='modified' content='20 October 2019'/>
 12            <meta name='reference' content='originals/query.wrl'/>
 13            <meta name='reference' content='http://www.siggraph.org/s98'/>
 14            <meta name='reference' content='http://www.siggraph.org/s98/conference/courses/18.html'/>
 15            <meta name='reference' content='http://www.sdsc.edu/~moreland/courses/Siggraph98/vrml97/slides/mt0465.htm'/>
 16            <meta name='reference' content='http://www.sdsc.edu/~moreland/courses/Siggraph98/vrml97/vrml97.htm'/>
 17            <meta name='reference' content='https://www.web3d.org/x3d/content/examples/X3dResources.html'/>
 18            <meta name='identifier' content='https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Siggraph98Course/Query.x3d'/>
 19            <meta name='generator' content='Vrml97ToX3dNist, http://ovrt.nist.gov/v2_x3d.html'/>
 20            <meta name='generator' content='X3D-Edit, https://savage.nps.edu/X3D-Edit'/>
 21            <meta name='license' content='../license.html'/>
 22       </head>
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Event Graph ROUTE Table shows event connections.
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<!-- to top Index for DEF nodes: Introspect, Message, Timer

Index for Viewpoint node: Viewpoint_1
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 23       <Scene>
 24            <WorldInfo info='"Copyright (c) 1998, David R. Nadeau"' title='Query browser state'/>
 25            <Viewpoint description='Entry view'/>
 26            <NavigationInfo/>
 27            <Transform scale='0.75 0.75 0.75' translation='-4.0 0.0 0.0'>
 28                 <Inline   url=' "Two.x3d" "https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Siggraph98Course/Two.x3d" "Two.wrl" "https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Siggraph98Course/Two.wrl" '/>
 29            </Transform>
 30            <Transform translation='-1.5 1.25 0.0'>
 31                 <Shape>
 32 
                    <!-- ROUTE information for Message node:  [from Introspect.message to set_string ] -->
                     <Text DEF='Message' string='""'>
 33                           <FontStyle family='"TYPEWRITER"' size='0.65' style='BOLD'/>
 34                      </Text>
 35                 </Shape>
 36            </Transform>
 37 
          <!-- ROUTE information for Timer node:  [from cycleTime to Introspect.trigger ] -->
           <TimeSensor DEF='Timer' cycleInterval='4.0' loop='true'/>
 38 
          <!-- ROUTE information for Introspect node:  [from Timer.cycleTime to trigger ] [from message to Message.set_string ] -->
           <Script DEF='Introspect'>
 39                 <field name='trigger' type='SFTime' accessType='inputOnly'/>
 40                 <field name='message' type='MFString' accessType='outputOnly'/>
  <![CDATA[ 
      
ecmascript:
		function update( ) {
			message.length = 5;
			message[0] = 'Browser: ' + Browser.getName( );
			message[1] = 'Version: ' + Browser.getVersion( );
			message[2] = 'URL:     ' + Browser.getWorldURL( );
			message[3] = 'Speed:   ' + Browser.getCurrentSpeed( );
			message[4] = 'Frames:  ' + Browser.getCurrentFrameRate( );
		}
		function initialize( ) {
			update( );
		}
		function trigger( t, ts ) {
			update( );
		}
]]>
 42            </Script>
 43            < ROUTE  fromNode='Timer' fromField='cycleTime' toNode='Introspect' toField='trigger'/>
 44            < ROUTE  fromNode='Introspect' fromField='message' toNode='Message' toField='set_string'/>
 45       </Scene>
 46  </X3D>
<!--
<!--
Event Graph ROUTE Table shows event connections.
-->

<!-- to top Index for DEF nodes: Introspect, Message, Timer

Index for Viewpoint node: Viewpoint_1
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X3D Tooltips element index: field, FontStyle, head, Inline, meta, NavigationInfo, ROUTE, Scene, Script, Shape, Text, TimeSensor, Transform, Viewpoint, WorldInfo, X3D, accessType and type, XML data types, field types

Event Graph ROUTE Table entries with 2 ROUTE connections total, showing X3D event-model relationships for this scene.

Each row shows an event cascade that may occur during a single timestamp interval between frame renderings, as part of the X3D execution model.

Timer
TimeSensor
cycleTime
SFTime
→
ROUTE
event to
(1)
Introspect
Script
trigger
SFTime 		then
 
 
  		Introspect
Script
message
MFString
→
ROUTE
event to
(2)
Message
Text
set_string
MFString

Additional guidance on X3D animation can be found in the 10-Step Animation Design Process and Event Tracing hint sheets. Have fun with X3D! 😀
-->
<!-- Online at
https://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Siggraph98Course/QueryIndex.html -->
<!-- Version control at
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<!-- Color legend: X3D terminology <X3dNode DEF='idName' field='value'/> matches XML terminology <XmlElement DEF='idName' attribute='value'/>
(Light-blue background: event-based behavior node or statement) (Grey background inside box: inserted documentation) (Magenta background: X3D Extensibility)
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